Quote:
Originally Posted by Paul Haese
All those images present quality optics. What defects I do see are most likely the result of field rotation or stacking rotation. It makes it hard to see any coma whatsoever. I suspect you will put this altogether and have little if any trouble with its operation.
What are you doing about dew amelioration?
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Paul I have a PID (proportional integral differential) pulse width modulated temperature controller I use for my Peltier Fridge. I will use this to maintain the optics temperature within about 0.2 degrees C of a set temperature and thus the dew shield at or by a lesser amount. This means focus does NOT change with ambient temperature. This worked very well with the 300mm lens and it also stops condensation on very expensive optics during periods of inactivity as I leave the heating on 24/7.
Bert